Clearest and cleanest ocean water in Brazil?

05/31/24 @jasonlovesdogs.  In Brazil, a lot depends on the substrate.   The water in Sergipe is generally very clean in terms of contaminants, but also somewhat murky because of the extremely fine sand - it squeaks like cornstarch when it's dry - and sediment from the many small rivers.  Other places can have a high bacteria count and be perfectly clear.

@jasonlovesdogs

Try Fernando de Noronha.

I used to be pretty familiar with the stretch between Rio and Santos. There were many spectacular places along the coastline... but that was back when there was a lot less settlement and the roads were limited. With today's Tiktok Effect "negative environmental impacts when suddenly tourism numbers increased in a short time..." once beautiful places are turning into traffic jams, overcrowding and other ill effects of predatory tourism.

There are few places I'll travel to visit Brazilian coastlines. They exist but I won't advertise them.

    Hello,
Any thoughts on where the cleanest and clearest ocean water is in Brazil? In São Luís it was pretty dirty and dark looking. In Florianopolis it looked ok? Is there any place in Brazil where the water looks likeBora Bora?
   

    -@jasonlovesdogs

Actually it very much depends on the time of the year you visit a place, and climactic conditions.

High winds whip up larger waves, and this causes disturbance to the ocean floor, and makes the water appear murkier.

In the dry months, small local rivers tend not to run and larger ones are at a lower level. Then when the rainy season arrives all the silt, muck and rubbish that has accumulated on the river beds well and margins, (well away from the beach areas), over the dry period gets washed down to the sea.

The problem is that the rainy season varies all round Brazil - in Rio it is December to April, in the NE of Brazil it is May to July, for example, and it is always very windy along the coast either side of Fortaleza.

I should imagine it would be possible to travel round Brazil, staying in each place just for the local dry season, and only see beautiful warm clear waters, But go to the same places in the rainy season and the water will appear completely different...

Pristine blue waters you can spot in shallow beaches, those that you can wander farther ashore without even covering kneecaps. 

Suny coastal regions, with reefs near shore, and with coastal vegetatio immediately behind the sand strip, therefore  not dilapidated by settlements are the best in terms of a perfect blue water. No sediments, no runoffs. 

Sometimes you have mangroves and estuaries, which tend t darken a bit the waters, but this is ok.